On a Linux Computer (Raspberry Pi is suitable), in a directory you have read/write access to:

mkdir pizza
cd pizza
wget -4 --limit-rate=20k -r -np http://voat.co/v/pizzagate

This will take a very long time, maybe a couple of days or even a bit more. Please do not begin the process unless you are prepared to leave your machine running for a long time. Make sure you have plenty of space to store the files you are downloading or it is all pointless and you are wasting Voat's bandwidth. Run these commands directly on the machine; do not run them over SSH or the process will stop as soon as you get disconnected.

DO NOT increase the limit rate or you may impact Voat servers and force Voat to permanently block your IP address or block these kinds of requests permanently.